1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H
11 #define _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H
12 
13 #include <__config>
14 #include <__iterator/iterator.h>
15 #include <__iterator/iterator_traits.h>
16 #include <__memory/addressof.h>
17 #include <cstddef>
18 #include <iosfwd> // for forward declarations of char_traits and basic_ostream
19 
20 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
21 #  pragma GCC system_header
22 #endif
23 
24 _LIBCPP_BEGIN_NAMESPACE_STD
25 
26 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
27 template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> >
28 class _LIBCPP_TEMPLATE_VIS ostream_iterator
29 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
30     : public iterator<output_iterator_tag, void, void, void, void>
31 #endif
32 {
33 _LIBCPP_SUPPRESS_DEPRECATED_POP
34 public:
35     typedef output_iterator_tag             iterator_category;
36     typedef void                            value_type;
37 #if _LIBCPP_STD_VER >= 20
38     typedef ptrdiff_t                       difference_type;
39 #else
40     typedef void                            difference_type;
41 #endif
42     typedef void                            pointer;
43     typedef void                            reference;
44     typedef _CharT                          char_type;
45     typedef _Traits                         traits_type;
46     typedef basic_ostream<_CharT, _Traits>  ostream_type;
47 
48 private:
49     ostream_type* __out_stream_;
50     const char_type* __delim_;
51 public:
52     _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) _NOEXCEPT
53         : __out_stream_(_VSTD::addressof(__s)), __delim_(nullptr) {}
54     _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT
55         : __out_stream_(_VSTD::addressof(__s)), __delim_(__delimiter) {}
56     _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value)
57         {
58             *__out_stream_ << __value;
59             if (__delim_)
60                 *__out_stream_ << __delim_;
61             return *this;
62         }
63 
64     _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*()     {return *this;}
65     _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++()    {return *this;}
66     _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;}
67 };
68 
69 _LIBCPP_END_NAMESPACE_STD
70 
71 #endif // _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H
72